170 lines
3.4 KiB
Plaintext
170 lines
3.4 KiB
Plaintext
.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ds Rn 3
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.ds Vn 2.2
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.hw XtMake-Geometry-Request XtQuery-Geometry wid-get
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.ps \\n(PS
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.\".if \\n(VS>=40 .vs \\n(VSu
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.\".if \\n(VS<=39 .vs \\n(VSp
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..
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.de De
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.ce 0
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.if \\n(BD .DF
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.nr BD 0
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.in \\n(OIu
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.if \\n(TM .ls 2
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.sp \\n(DDu
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.fi
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..
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.de FD
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.LP
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.KS
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.TA .5i 3i
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.nf
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.de IN \" send an index entry to the stderr
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.de C{
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.\"
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.de NT
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.ne 7
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. \" Note End -- doug kraft 3/85
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..
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.ny0
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.TH XtAppAddInput 3Xt "Release 3" "X Version 11" "XT FUNCTIONS"
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.SH NAME
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XtAppAddInput, XtRemoveInput \- register and remove an input source
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.SH SYNTAX
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XtInputId XtAppAddInput(\fIapp_context\fP, \fIsource\fP, \fIcondition\fP, \
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\fIproc\fP, \fIclient_data\fP)
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.br
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XtAppContext \fIapp_context\fP;
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.br
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int \fIsource\fP;
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.br
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XtPointer \fIcondition\fP;
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.br
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XtInputCallbackProc \fIproc\fP;
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.br
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XtPointer \fIclient_data\fP;
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.LP
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void XtRemoveInput(\fIid\fP)
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.br
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XtInputId \fIid\fP;
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.SH ARGUMENTS
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.ds Co that identifies the application
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.IP \fIapp_context\fP 1i
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Specifies the application context \*(Co.
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.ds Cd input is available
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.IP \fIclient_data\fP 1i
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Specifies the argument that is to be passed to the specified procedure
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when \*(Cd.
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.IP \fIcondition\fP 1i
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Specifies the mask that indicates a read, write, or exception condition
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or some operating system dependent condition.
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.IP \fIid\fP 1i
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Specifies the ID returned from the corresponding
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.ZN XtAppAddInput
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call.
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.ds Pr \ to be called when input is available
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.IP \fIproc\fP 1i
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Specifies the procedure that is\*(Pr.
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.IP \fIsource\fP 1i
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Specifies the source file descriptor on a UNIX-based system
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or other operating system dependent device specification.
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.SH DESCRIPTION
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The
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.ZN XtAppAddInput
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function registers with the \*(xI read routine a new source of events,
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which is usually file input but can also be file output.
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Note that file should be loosely interpreted to mean any sink
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or source of data.
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.ZN XtAppAddInput
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also specifies the conditions under which the source can generate events.
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When input is pending on this source,
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the callback procedure is called.
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.LP
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The legal values for the condition argument are operating-system dependent.
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On a UNIX-based system,
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the condition is some union of
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.ZN XtInputReadMask ,
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.ZN XtInputWriteMask ,
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and
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.ZN XtInputExceptMask .
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The
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.ZN XtRemoveInput
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function causes the \*(xI read routine to stop watching for input
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from the input source.
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.SH "SEE ALSO"
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XtAppAddTimeOut(3Xt)
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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